1.Features and application
Transparent polyester film, low thermal shrinkage, excellent machinability, electrical insulation performance, good water vapor barrier performance. Mainly used in areas with the polyester film is required to have a low shrinkage rate, such as the base film of solar backboard, touch switch and flexible printed circuit.
2.Thickness & specification
Standard thickness: 75μm、100μm、125μm、188μm、250μm. Other thickness can be customized according to customer's specific requirement.
Specification
Property | Unit | Index | Test method | |||||
Thickness | μm | 75 | 100 | 125 | 188 | 250 | ||
Thickness tolerance | % | ±3 | ±3 | ±3 | ±4 | ±5 | GB/T 13542.2-2009 | |
Tensile strength ≥ | MD | MPa | 160 | 160 | 160 | 150 | 150 | |
TD | 170 | 170 | 165 | 160 | 160 | |||
Elongation at break ≥ | MD | % | 100 | 100 | 100 | 100 | 100 | |
TD | 90 | 90 | 90 | 90 | 90 | |||
Heat shrinkage (150℃, 15min) ≤ | MD | % | 0.8 | |||||
TD | 0.2 | |||||||
Wetting Tension ≥ | Corona | Mn/m | 52 | GB/T 14216-2008 | ||||
Haze ≤ | % | 2.5 | 3.5 | 4.0 | 5.0 | 6.0 | ASTM D 1003 | |
Electrical strength ≥ | V/μm | 115 | 100 | 90 | 76 | 65 | GB/T 1408.1-2006 | |
WVTR ≤ | g/(m2.24h) | --- | --- | 3.5 | 2.5 | 2.0 | GB/T 1408.1-2006 | |
PCT accelerated aging > | % | No cracking and embrittlement | 121℃, 100%RH, 2atm, 40h | |||||
Remark: WVTR, PCT accelerated aging are the type inspection, others are delivery inspection. |
3.Storage conditions
Stored in a clean, dry, ventilated place, keep away from fire and heating, avoid direct sunlight.